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Rifles, Reloading, Optics, Equipment
Reloading
280 Ackley Question
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<blockquote data-quote="dok7mm" data-source="post: 2074014" data-attributes="member: 90080"><p>I also used Redding comp dies on my son's 280a.i. with similar results.</p><p></p><p>The relationship between chamber and die is excessive and you end up sizing too much. It likely over works the brass, leading to a lot of trimming after a few firings. Then the shoulder moves into the neck and you end up creating a donut.</p><p></p><p>On my son's rifle, the donut arrived on some 2x fired and all on 3rd firing. I used mandrels to force the donut to the outside and turned necks + a bit more in the shoulder. I used pin gauges and tubing mic to verify all was well. It took a lot of time and was a PITA.</p><p></p><p>I knew it would happen again down the line, so I shopped for new brass and bought a sizer from Forester and Hornady. Returned the Forester and kept the Hornady, as it sized the shoulder only .002" and .0025" above the web. Turned the necks and everything worked out fine, some are on 5th firing and very little trim has been needed & no donuts.</p><p></p><p>Just my experience!</p></blockquote><p></p>
[QUOTE="dok7mm, post: 2074014, member: 90080"] I also used Redding comp dies on my son's 280a.i. with similar results. The relationship between chamber and die is excessive and you end up sizing too much. It likely over works the brass, leading to a lot of trimming after a few firings. Then the shoulder moves into the neck and you end up creating a donut. On my son's rifle, the donut arrived on some 2x fired and all on 3rd firing. I used mandrels to force the donut to the outside and turned necks + a bit more in the shoulder. I used pin gauges and tubing mic to verify all was well. It took a lot of time and was a PITA. I knew it would happen again down the line, so I shopped for new brass and bought a sizer from Forester and Hornady. Returned the Forester and kept the Hornady, as it sized the shoulder only .002" and .0025" above the web. Turned the necks and everything worked out fine, some are on 5th firing and very little trim has been needed & no donuts. Just my experience! [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
280 Ackley Question
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